package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;


/**
 * 自定义切面，实现公共字段自动填充
 *
 */
@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    /**
     * 切入点
     */
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public  void autoFillPointCut(){}
    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint){
        log.info("开始进行公共字段自动填充");

        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        AutoFill autoFill=signature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType = autoFill.value();
        Object[] args = joinPoint.getArgs();
        if (args==null ||args.length==0){
            return;
        }
        Object entiry=args[0];

        LocalDateTime now=LocalDateTime.now();
        Long currentId= BaseContext.getCurrentId();
       if (operationType==OperationType.INSERT){
           try {
               Method setCreateTime = entiry.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
               Method setCreateUser = entiry.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
               Method setUpdateTime = entiry.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
               Method setUpdateUser = entiry.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
               setCreateTime.invoke(entiry,now);
                setCreateUser.invoke(entiry,currentId);
                setUpdateTime.invoke(entiry,now);
                setUpdateUser.invoke(entiry,currentId);
           } catch (Exception e) {
               e.printStackTrace();

           }
       } else if (operationType == OperationType.UPDATE) {
           try {

               Method setUpdateTime = entiry.getClass().getDeclaredMethod("setUpdateTime", LocalDateTime.class);
               Method setUpdateUser = entiry.getClass().getDeclaredMethod("setUpdateUser", Long.class);

               setUpdateTime.invoke(entiry,now);
               setUpdateUser.invoke(entiry,currentId);
           } catch (Exception e) {
               e.printStackTrace();

           }
       }
    }
}
